Michael Wittry has been investing in his Roth IRA retirement account for 23 years. Two years ago, his account was worth $215,667. After losing 13 of its original value, it then gained 12 of its new value back. What is the current value of his Roth IRA? (Do not round intermediate calculations.)

$210,145.925

Explanation:

From the question we can deduce that he lost 13% of his original value and gained 12% of its new value back.

So,

215667 ×  0.13 = 28,036.71

We, subtract this from the first value 215667-28036.71 = 187630.29 and that is 87% of original value.

He then gains 12% of new value back. 187630.29 x 0.12 = 22515.6348

To get the current value of his IRA, add this to the previous figure 187630.29 + 22515.6348 = $210,145.925

ans.

heterothermic organisms include those organisms that can switch between homeothermic (having body temperature higher than environment) and poikilothermic (having variation in internal body temperature) strategies.

some migratory birds show heterothermy as they decrease their metabolic rate during cold nights to keep their body temperature low. drop in metabolic rate allows increase in production efficiency of birds that reduces the internal body temperature to make it equal to external cold temperature during cold nights.

thus, the correct answer is 'birds allow their temperature drop in order to increase their production efficiency.'

answerjointly by the fed and by the behavior of individuals who hold money and of banks in which money is held;